APA-referens (7:e uppl.)

(2001). Publication manual of the American psychological association (5th ed.). American Psychological Association.

Chicago-referens (17:e uppl.)

Publication Manual of the American Psychological Association. 5th ed. Washington, DC: American Psychological Association, 2001.

MLA-referens (9:e uppl.)

Publication Manual of the American Psychological Association. 5th ed. American Psychological Association, 2001.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.